Oh, and if you do try this, make sure you only change the "pd" tcl commands and not pd message selectors:
pd [concat pd init blah blah blah
Above, the first "pd" is a tcl command and should be changed to "pdsend". However, the second "pd" is part of a string that gets interpreted by the core as the selector of a message (i.e., the receive symbol "pd"). The second part should be left as is.
But if you happen to accidentally change a selector you'll probably get an error to the Pd console, "pdsend: no such object".
-Jonathan